linear integrated systems ? 4042 clipper court ? fremont, ca 94538 ? tel: 510 490 - 9160 ? fax: 510 353 - 0261 doc 201122 5 / 02 / 20 14 rev# a 7 ecn# lsk3 89 features ultra low noise e n = 0.9 nv/ h z (typ) tight matching i v gs1 - 2 i = 20mv max high breakdown voltage bv gss = 40v max high gain g fs = 20ms (typ) low capacitance 25 pf typ improved second source replacement for 2sk389 absolute maximum ratings 1 @ 25 c (unless otherwise stated) maximum temperatures storage temperature - 6 5 to + 150c junction operating temperature - 55 to +1 35 c maximum power dissipation continuous power dissipation @ + 25c 4 0 0mw maximum currents gate forward current i g(f) = 10ma maximum voltages gate to source v gss = 4 0v gate to drain v gds = 4 0v matching characteristics @ 25 c (unless otherwise stated) symbol characteristic min typ max units conditions differential gate to s ource cutoff voltage 20 m v v ds = 10v, i d = 1ma gate to source saturation current ratio 0.9 --- v ds = 10v, v gs = 0 v electrical characteristics @ 25 c (unless otherwise stated) symbol characteristic min typ max units condition s bv gss gate to source breakdown voltage - 40 v v ds = 0, i d = - 1 00 a v gs(off) gate to source pinch - off voltage - 0.15 - 2 v v ds = 10 v, i d = 0.1 a i dss drain to source saturation current lsk389a 2.6 6.5 ma v d s = 10v, v gs = 0 lsk389b 6 12 lsk389 c 10 20 lsk389d 17 30 i gss gate to source leakage current - 2 00 pa v gs = - 30 v, v d s = 0 i g1g2 gate to gate isolation current 1.0 a v g1 - g 2 = 45 v, i d = i s = 0 a lsk3 89 ultra low noise monolithic dual n - channel jfet amplifier to - 71 top view soic - a top view * for equivalent single version, see lsk170 f amily note: all min/typ/max limits are absolute numbers. negative signs indicate electric al polarity only. gs2 gs1 v v ? dss2 dss1 i i
linear integrated systems ? 4042 clipper court ? fremont, ca 94538 ? tel: 510 490 - 9160 ? fax: 510 353 - 0261 doc 201122 5 / 02 / 20 14 rev# a 7 ecn# lsk3 89 electrical characteristics cont. @ 25 c (unless otherwise stated) symbol ch aracteristic min typ max units conditions g fs full conduction transconduct ance 8 20 ms v ds = 10v, v gs = 0, f = 1khz e n noise voltage 0.9 1.9 nv/ hz v ds = 10v, i d = 2ma, f = 1khz, nbw = 1hz e n noise voltage 2.5 4 nv/hz v ds = 10v, i d = 2ma, f = 10hz, nbw = 1hz c iss common source input capacitance 25 pf v ds = 10v, v gs = 0, f = 1mhz, c rss common source reverse transfer cap. 5.5 pf v d g = 10v, i d = 0, f = 1mhz, a ordering information soic - 8 lsk389 - - i dss range a b c d 2.6 - 6.5 ma 6 - 12 ma 10 - 20 ma 17 - 30 ma package to - 71 soic - 8 to - 71 6l soic - a 8l 1. absolute maximum ratings are limiting values above which serviceability may be impaired. information furnished by linear integrated systems is believed to be accurate and reliable. h owever, no responsibility is assumed for its use; nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of linear integrated s ystems. notes: linear integrated systems (lis) is a 25 - year - old, third - generation precision semiconductor company providing high - quality discrete components. expertise brought to lis is based on proce sses and products developed at amelco, union carbide, intersil and micro power systems by company president john h. hall. hall, a protg of silicon valley legend dr. jean hoerni, was the director of ic development at union carbide, co - founder and vice pre sident of r&d at intersil, and founder/president of micro power systems. package dimensions to - 71 soic - a note: all dimensions in inches 0.210 0.170
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